Dayanidhi or Dhayanidhi is an Indian name that may refer to
- Given name
- Dhayanidhi SK is a young entrepreneur from Attappadi, Kerala, India. He is the founder and CEO of Makkal Raja Productions.
- Dayanidhi Azhagiri, Indian Tamil cinema producer and distributor
- Dayanidhi Maran (born 1966), Indian politician
- Dayanidhi Paramahansa Dev (1905–1992), Indian sadguru, yogi, mystic and a Hindu spiritual leader
- Surname
- Santhosh Dhayanidhi, Indian film composer and singer